CN217652831U - Engine timing chain cover structure - Google Patents
Engine timing chain cover structure Download PDFInfo
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- CN217652831U CN217652831U CN202122543938.6U CN202122543938U CN217652831U CN 217652831 U CN217652831 U CN 217652831U CN 202122543938 U CN202122543938 U CN 202122543938U CN 217652831 U CN217652831 U CN 217652831U
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- vvt
- solenoid valve
- crankcase
- cylinder head
- main part
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Abstract
The utility model discloses engine timing chain shroud structure, including the shroud main part, shroud main part one side is equipped with and installs the shroud main part to crankcase and cylinder head installation face on engine crankcase and the cylinder head, the outstanding VVT mounting surface that is equipped with in shroud main part upper end, the distance between VVT mounting surface and crankcase and the cylinder head installation face is 72-76mm, is equipped with two VVT solenoid valve mounting holes on the VVT mounting surface, and every VVT solenoid valve mounting hole outer fringe is equipped with VVT solenoid valve bolt fastening hole respectively. Adopt the utility model discloses the structure can satisfy two VVT mounting structure, and when the VVT was changed in the maintenance, camshaft and VVT just can be taken out to housing and oil dish before can not dismantling.
Description
Technical Field
The utility model relates to the technical field of engines, in particular to engine timing chain cover structure.
Background
A timing chain cover structure of a gasoline engine of a certain type is designed into a single VVT structure (only an intake VVT is provided), and the type is a side OCV type VVT system, as shown in fig. 1. This structure has the following disadvantages: the engine oil passes through an engine cylinder cover from the OCV and then reaches a VVT (variable valve timing) adjusting mechanism, the oil way control is overlong, the leakage in the system is large, and the adjusting speed is slow; it is not favorable for the dynamic property and the economical requirement of the engine.
Disclosure of Invention
The utility model aims at the defect that above-mentioned prior art exists, provide an engine timing chain shroud structure, can satisfy two VVT mounting structure, and when VVT was changed in the maintenance, can just can take out camshaft and VVT without pulling out preceding housing and oil pan.
The utility model discloses a realize that the technical scheme that above-mentioned purpose adopted is: the cover structure of the engine timing chain comprises a cover main body, wherein a crankcase and a cylinder cover mounting surface for mounting the cover main body on an engine crankcase and a cylinder cover are arranged on one side of the cover main body, a VVT mounting end surface is arranged at the upper end of the cover main body in a protruding mode, the distance between the VVT mounting end surface and the crankcase and cylinder cover mounting surface is 72-76mm, two VVT solenoid valve mounting holes are formed in the VVT mounting end surface, and VVT solenoid valve bolt fixing holes are formed in the outer edge of each VVT solenoid valve mounting hole.
The utility model discloses a further technical scheme is: the upper end of the cover cap main body is provided with two VVT mounting end surfaces on the same vertical plane in a protruding mode, the two VVT mounting end surfaces are arranged side by side in a left-right mode, and each VVT mounting end surface is provided with a VVT electromagnetic valve mounting hole.
The utility model discloses a further technical scheme is: the distance between the VVT mounting end face and the mounting faces of the crankcase and the cylinder head is 74mm.
The utility model discloses engine timing chain shroud structure has following beneficial effect:
1. two VVT solenoid valve mounting holes are arranged on a cover main body of the cover structure of the engine timing chain, and an air inlet VVT solenoid valve and an air exhaust VVT solenoid valve can be simultaneously mounted, so that the dynamic property of the engine under different working conditions is better improved, and the engine valve timing control is more effective;
2. after optimization, the distance between the VVT mounting end face and the mounting faces of the crank case and the cylinder cover is 74mm, and when parts such as a camshaft, the VVT and the like are repaired and replaced after test verification and sale, a timing chain cover cap and an oil pan do not need to be detached, so that the working efficiency is improved, and the maintenance cost is reduced;
3. the design of the joint of related parts such as a cylinder head cover related to structural modification is optimized, and the sealing performance and the reliability of the engine are ensured.
The engine timing chain cover structure of the present invention will be further described with reference to the accompanying drawings and embodiments.
Drawings
FIG. 1 is a schematic illustration of a prior art engine timing chain cover configuration;
FIG. 2 is a schematic view of the engine timing chain cover structure of the present invention;
FIG. 3 is a side view of the engine timing chain cover structure of FIG. 2;
FIG. 4 is a schematic view of the engine timing chain cover structure of FIG. 2 with a VVT solenoid valve mounted and connected to a cylinder head cover or the like;
the reference numbers indicate: 1-cover cap main body, 2-VVT solenoid valve bolt fixing holes, 3-VVT solenoid valve mounting holes, 4-VVT mounting end face, 5-crankcase and cylinder cover mounting face, 6-cylinder cover, 7-cylinder cover sealing gasket, 8-air inlet VVT solenoid valve, 9-exhaust VVT solenoid valve and 10-solenoid valve mounting bolt.
Detailed Description
As shown in fig. 2 and 3, the engine timing chain cover structure of the present invention comprises a cover main body 1, wherein one side of the cover main body 1 is provided with a crankcase and a cylinder head mounting surface 5 for mounting the cover main body 1 on the engine crankcase and the cylinder head, the upper end of the cover main body 1 is provided with a VVT mounting end surface 4 in a protruding manner, the distance between the VVT mounting end surface 4 and the crankcase and the cylinder head mounting surface 5 is 72-76mm, in the present embodiment, the distance D between the VVT mounting end surface 4 and the crankcase and the cylinder head mounting surface 5 is 74mm, and of course, the present invention is in the scope that a suitable value can be obtained according to a specific model. Be equipped with two VVT solenoid valve mounting holes 3 on VVT mounting surface 4, every 3 outer edges of VVT solenoid valve mounting holes are equipped with VVT solenoid valve bolt fixing hole 2 respectively. In this embodiment, the upper end of the main cover body 1 is provided with two VVT mounting end surfaces 4 protruding from the same vertical plane, the two VVT mounting end surfaces 4 are arranged side by side in a left-right manner, and each VVT mounting end surface 4 is provided with one VVT solenoid valve mounting hole 3.
After the VVT solenoid valve is installed, as shown in fig. 4, the cylinder head cover 6 is connected above the VVT installation end surface 4 of the cover main body 1, and is connected with the timing chain cover through the cylinder head cover gasket 7, and the intake VVT solenoid valve 8 and the exhaust VVT solenoid valve 9 are respectively installed in the two VVT solenoid valve installation holes 3, and are locked and fixed by the solenoid valve installation bolt 10.
The above embodiments are only preferred embodiments of the present invention, the structure of the present invention is not limited to the forms illustrated in the above embodiments, and any modifications, equivalent substitutions and the like made within the spirit and principle of the present invention should be included within the scope of the present invention.
Claims (3)
1. The utility model provides an engine timing chain shroud structure, includes shroud main part (1), and shroud main part (1) one side is equipped with and installs the crankcase and cylinder head installation face (5) on engine crankcase and the cylinder head with shroud main part (1), its characterized in that, the protruding VVT mounting surface (4) that is equipped with in shroud main part (1) upper end, and the distance between VVT mounting surface (4) and crankcase and cylinder head installation face (5) is 72-76mm, is equipped with two VVT solenoid valve mounting hole (3) on VVT mounting surface (4), and every VVT solenoid valve mounting hole (3) outer fringe is equipped with VVT solenoid valve bolt fastening hole (2) respectively.
2. The engine timing chain cover structure according to claim 1, wherein the cover main body (1) has two VVT attachment end surfaces (4) projected from an upper end thereof on a same vertical plane, the two VVT attachment end surfaces (4) are arranged side by side in a left-right manner, and one VVT solenoid valve attachment hole (3) is provided in each VVT attachment end surface (4).
3. The engine timing chain cover structure according to claim 1, wherein the distance between the VVT mount end face (4) and the crankcase and cylinder head mount face (5) is 74mm.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121789216 | 2021-08-03 | ||
| CN2021217892162 | 2021-08-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217652831U true CN217652831U (en) | 2022-10-25 |
Family
ID=83659979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122543938.6U Active CN217652831U (en) | 2021-08-03 | 2021-10-21 | Engine timing chain cover structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217652831U (en) |
-
2021
- 2021-10-21 CN CN202122543938.6U patent/CN217652831U/en active Active
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